Creating subplots with a for loop Pandas Python-CodePudding

I want to create 3 subplots below with the subplot with the coordinates stated in the for loop parameters as add_plot. The format of add_plot is nrows, ncols ,cells. But I get an error when I try to implement it. How can I modify the contents of the for loop within Graphing() to achieve this?

Error:

ValueError: Single argument to subplot must be a three-digit integer, not (2, 2, 1)

Code:

import matplotlib.pyplot as plt
import pandas as pd 
import numpy as np 

data = pd.DataFrame({'col1': [4, 5, 2, 2, 3, 5, 1, 1, 6], 'col2': [6, 2, 1, 7, 3, 5, 3, 3, 9], 
     'label':['Old','Old','Old','Old','Old','Old','Old','Old','Old'],
     'date': ['2022-01-24 10:07:02', '2022-01-27 01:55:03', '2022-01-30 19:09:03', '2022-02-02 14:34:06',
              '2022-02-08 12:37:03', '2022-02-10 03:07:02', '2022-02-10 14:02:03', '2022-02-11 00:32:25',
              '2022-02-12 21:42:03']})

def Graphing():
    #Size of the figure 
    fig = plt.figure(figsize=(12, 7))

    #Creating the dataframe 
    df = pd.DataFrame({
                      'date' : datetime, 
                      'col1': data['col1']
    })
    
    for subplot_,add_plot in (zip(
                         ['sub1','sub2','sub3'],
                         [(2,2,1), (2,2,1), (2,1,2)])): 
        subplot_ = fig.add_subplot(add_plot)
        
    # Show Graph 
    plt.show()

Graphing()

CodePudding user response：

This still raises a NameError: name 'datetime' is not defined as you didn't define datetime in your code, but shouldn't raise any error for the subplots.

import matplotlib.pyplot as plt
import pandas as pd 
import numpy as np 

data = pd.DataFrame({'col1': [4, 5, 2, 2, 3, 5, 1, 1, 6], 'col2': [6, 2, 1, 7, 3, 5, 3, 3, 9], 
     'label':['Old','Old','Old','Old','Old','Old','Old','Old','Old'],
     'date': ['2022-01-24 10:07:02', '2022-01-27 01:55:03', '2022-01-30 19:09:03', '2022-02-02 14:34:06',
              '2022-02-08 12:37:03', '2022-02-10 03:07:02', '2022-02-10 14:02:03', '2022-02-11 00:32:25',
              '2022-02-12 21:42:03']})

def Graphing():
    #Size of the figure 
    fig = plt.figure(figsize=(12, 7))

    #Creating the dataframe 
    df = pd.DataFrame({
                      'date' : datetime, 
                      'col1': data['col1']
    })
    
    for subplot_,add_plot in (zip(
                         ['sub1','sub2','sub3'],
                         [(2,2,1), (2,2,1), (2,1,2)])): 
        subplot_ = fig.add_subplot(*add_plot)
        
    # Show Graph 
    plt.show()

Graphing()